| 摘要 |
A pre-assembled disc stack having a predetermined cross-section within a preset tolerance which is installable and removable as a unit with respect to a drive, brake or a combination thereof, composed of a plurality of annular discs stacked in a prearranged order, in which a first set of annular discs is structured for engaging a first component of a drive, brake or combination thereof, and in which a second set of annular discs is structured for engaging a second component of the clutch, brake or combination thereof which is rotatably mounted with respect to the first component. The first and second sets of annular discs are mutually connected together as a unit by a plurality of alignment pins which pass through circumferentially disposed alignment holes in the second set of annular discs which effectively trap the first set of annular discs with respect to the second set of annular discs in the aforesaid prearranged order. To effect assembly, a plurality of annular discs of the first and second sets of annular discs are provided, each annular disc of each set having a respective predetermined thickness within a respective tolerance which pertains to that set. An alignment pin is placed through each of the circumferentially disposed alignment holes in the second set of annular discs and secured in place, thereby assembling both sets of annular discs into a unit.
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